Abstract #3635

An Active Quench Protection System for a 1.5 T MgB2 Conduction-Cooled Magnet

Robert J. Deissler¹, Tanvir Baig¹, Charles R. Poole¹, David Doll², Michael Tomsic², and Michael A. Martens¹

¹Department of Physics, Case Western Reserve University, Cleveland, OH, United States, ²Hyper Tech Research Inc., Columbus, OH, United States

A numerical simulation of the heat equation was performed for a 10 coil persistent mode 1.5 T MgB₂ conduction-cooled magnet. A hot spot was initialized by allowing a section of wire to become resistive on one coil. An active protection system consisting of surface heaters on all the coils was initiated at 100 mV. Using a standard wire, the temperature was found to reach nearly 300 K, which may damage the coil. By increasing the amount of copper, using Glidcop instead of Monel, or increasing the thermal conductivity of the insulation, the temperature is kept within safe limits.

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